The invention discloses a PDP display panel barrier with a novel structure, which consists of arch surfaces, the section of each barrier unit forms a shape of indent circular triangle, and the barrier consists of the part among three tangency points (Q1, Q2 and Q3) after the section is tangent by three circles. The three tangent circles are circular luminous units (R), (G) and (B) of which the inner walls are coated with fluorescent powder capable of emitting red (R), green (G) and blue (B) light. The barrier makes the same plane domain obtain the largest luminous area, thereby improving the brightness of the PDP display panel; furthermore, the wall thickness of the circular luminous units (R), (G) and (B) can be reduced within appropriate range, so as to further increase the luminous area and improve the brightness. The PDP display panel barrier with the novel stricture can maximize the luminous area of the PDP display panel and further improve the brightness of the PDP display panelon the basis of eliminating light interference and improving energy conversion efficiency.